MySQL主从服务器的守护进程监视

Posted 2020-10-06

检测myslq从库状态，跳过固定的错误号，每隔30秒检测一次，如果符合条件自动跳过或者是重启从库

1）取出mysql从库的关键字

　

1 [[email protected] scripts]# mysql -u root -p123qq.com3307 -S /data/3307/mysql.sock -e "show slave status\G"|grep -E "Running|Seconds_Behind_Master|Last_SQL_Errno"|awk ‘{print $NF}‘
2 Yes
3 Yes
4 0
5 0

 

 

　

2）把错误号定义在数组里面

3）while ture

根据思路调试出如下脚本

 1 [[email protected] scripts]# cat check_mysql_slave.sh 
 2 #/bin/bash
 3 #Date:    
 4 #Author:   
 5 #Mail:     [e-mail]
 6 #Function: This scripts  function is check mysql slave is ok
 7 #Version:  1.1
 8 qq="[email protected]"
 9 cmd="mysql -u root -p123qq.com3307 -S /data/3307/mysql.sock -e"
10 ip=`ifconfig eth2|sed -n ‘s#^.*ddr:\(.*\) Bc.*$#\1#gp‘`
11 skip=`$cmd "stop slave;set global sql_slave_skip_counter=1;start slave;"`
12 error_numb=(1158 1159 1008 1007 1062)
13 while true
14 do
15 status=(`$cmd "show slave status\G"|grep -E "Running|Seconds_Behind_Master|Last_SQL_Errno"|awk ‘{print $NF}‘`)
16  
17    if [ "${status[0]}"  == "Yes" -a "${status[1]}" == "Yes" -a "${status[2]}" == "0" ]
18        then
19            echo  "mysql slave is ok"
20        else
21            for ((n=0;n<${#error_numb[*]};n++))
22            do
23               if [ "${status[3]}" == "${error_numb[n]}" ];then
24               ${skip}
25               else
26                $cmd "stop slave;start slave;"
27               fi
28            done
29            echo  "mysql salve is not ok"
30            echo "${ip} mysql is not ok"|mail -s "mysql slave error at `date +%F%T`" $qq
31    fi
32 sleep 3
33 done

 

　　

测试结果如下

[[email protected] scripts]# sh check_mysql_slave.sh 

mysql salve is not ok

mysql slave is ok

mysql slave is ok

mysql slave is ok

mysql slave is ok

mysql slave is ok

mysql slave is ok

mysql slave is ok

mysql slave is ok

mysql slave is ok

mysql slave is ok